SV frame measurement..Please?

[danilo]

I'm wondering Where/How? can I get a few basic SV measurements:

1) Length of lower A arm .

2) Distance between Front Upper A Arm pivots (chassis width at top)

3) Distance between Front Lower A Arm pivots (chassis width at bottom)

 

I'm trying to establish the base dims for the front suspenders..

To check and see if I'm drawing something even similar :-)

 

thank you

[scannon]

From my '04 SV, taken with a tape measure, accuracy probably +/- 2mm.

 

1) Front leg 455mm, pivot to pivot point

Rear leg 365mm

Center to center inner pivot points 380mm

 

2) 735mm center of bushing bolts

 

3) 580mm

 

on 2 & 3 it appears that rear pivots are the same distance apart, difficult to measure with parts getting in the way.

[danilo]

Thank you.. that's Brilliant!

Erm.. Wee bit of confusion though. I'm having trouble deciphering /identifying exactly where those dims fit.. I'm Canadian eh? our English is ..odd.

Presumably your answers are in the order of the questions I asked?

 

EDIT: I drew a wee diagram and it's all Very Clear.. now

Is your frame side height 13" or is it more on the SV ?

Took a peek at your Car link.. V Nice indeed!

A well loved toy and rightly so.

What boost levels are you at?

What is tolerable/semi safe :-) on a Mazda engine?

I ask, as I (and the son) support a Fleet ..of turbo Saabs.. Millstones is a more apt descriptor.

Just reflashed the ECU on Mine to 1.7 bar on a linear pressure curve, as opposed to the oem Full boost at 2k then tapering off after 3500.

Now it increases linearly all the way to redline.

Entirely different (and much preferable) power band for my tastes.

Clearly that pictured Turbo is brand new, they don't stay that pristine for long.

I also see that you have oem brakes.. I would assume they are adequate to needs,no reason to think otherwise.. but.. in this day when Monster brakes seem the fashion ??

 

Thank you again for the info.

Edited January 26, 2011 by danilo

[scannon]

Thank you.. that's Brilliant!

Erm.. Wee bit of confusion though. I'm having trouble deciphering /identifying exactly where those dims fit.. I'm Canadian eh? our English is ..odd.

Presumably your answers are in the order of the questions I asked? Yes

 

EDIT: I drew a wee diagram and it's all Very Clear.. now

Is your frame side height 13" or is it more on the SV ?

Depends on where you measure it. Do you want distance between pivot points, center to center or top of upper frame rail to bottom of lower frame rail?

 

Took a peek at your Car link.. V Nice indeed!

A well loved toy and rightly so. Thank you, it is well loved and driven hard.

 

What boost levels are you at? Currently at 10 psi

What is tolerable/semi safe :-) on a Mazda engine? My engine is totally stock inside, I'm now getting a little over 300 RWHP at 10psi. I recently added water/methanol injection and if I wanted, I could easily get 350 RWHP and the engine would live as long as I kept the rev limiter at 7,300 rpm. With forged internals you can run whatever boost you can afford, I've seen a few running over 25psi getting well over 600 RWHP

 

I ask, as I (and the son) support a Fleet ..of turbo Saabs.. Millstones is a more apt descriptor.

Just reflashed the ECU on Mine to 1.7 bar on a linear pressure curve, as opposed to the oem Full boost at 2k then tapering off after 3500.

Now it increases linearly all the way to redline.

Entirely different (and much preferable) power band for my tastes. My boost is all in by 3k rpm and holds to self imposed redline of 7k

 

Clearly that pictured Turbo is brand new, they don't stay that pristine for long. It was on my Miata for about 20k miles before it went on the Caterham engine. That picture was just after it and the exhaust had been ceramic coated. It looked nice until the first track session. In 20 minutes that 2000F ceramic coating was mostly flaked off and the system turned grey. The polished pipe turned brownish purple. I got my money back for the coating

 

I also see that you have oem brakes.. I would assume they are adequate to needs,no reason to think otherwise.. but.. in this day when Monster brakes seem the fashion ??

Every time I talk to Ben about bigger brakes he tells me people race with the same standard brakes with no problems. I upgraded the pads and have had no problems. I would like more bite, it takes a lot of leg but they have never faded on the track

 

Thank you again for the info.

 

You're welcome

[snookwheel]

Wow.. first time I have read your BritishV8 link. Beautiful build and stunning car Skip! That must be a blast to drive!

 

Scott

[scannon]

Scott: Thanks for the kind words. It was fun to build the car but driving it is an absolute blast. She's not a garage queen and has been averaging 2,500 miles per year. Those pictures were her first outing the second year. She was as fresh and clean as I could make her.

 

danilo: The frame rails measure 315mm just forward of the front pivot points. It hard to get a good measurement as the two pivot points are not in the same plane, both lateral and transverse.

 

The front pivot points for the upper and lower A frames measures about 235mm, again the same problem as above. Rear A frame pivot points measure about 195 mm.

 

I tried to attach a picture of the mounting points but the Manage Attachments button is not working. PM me with your regular email and I will send the photo to you.

[danilo]

What I'm trying to do is draw an SV chassis..

Exact copy is not necessary but proven suspender geometry is :-)

I owned an S2 in the 70's an the Wife proved quite good at Solo in it Runner up in the nationals one year. Now older (and of reduced circumstance) I would like another one, as much as a project than anything else.

The SV appeals as my S2 used to (too often) entangle my feet under the pedals.. a religion producing event in traffic.

I have a chassis in .dwg form ...so far.. plus a start on required bits hubs, brakes, uprights, steering gear, axle and I'm learning of 'most' of the enlargements inherent in the SV

ie 91+" wheel base, 59" track, 100 mm cockpit width increase . etc.

The size of the chassis front eluded me.. I have guessed at it up to now and your supplied measurements suggest I was about an inch 'off'.

Close but no Cigar.

The Triumph uprights predetermine a lot of the possible geometry .

However IF you are willing to help 'more info as to the Arm dims and their Pivot locations on the frame (as well as the height of the frame) would most certainly be useful informations

I'm just reluctant to impose too heavily.